Recreations in Mathematics
Book Description
From the ten fingers arose [y the dedmal system of numeration. Recording the results of counting was done by theE gyptians and other ancient nations by means of strokes and hooks; for one thing a angle stroke I was made, for two things two strokes II were used, and so on up to ten which was represented by O. Then eleven was written I fl, twelve 11 n, and so on up to twenty, or two tens, which was ...
MoreFrom the ten fingers arose [y the dedmal system of numeration. Recording the results of counting was done by theE gyptians and other ancient nations by means of strokes and hooks; for one thing a angle stroke I was made, for two things two strokes II were used, and so on up to ten which was represented by O. Then eleven was written I fl, twelve 11 n, and so on up to twenty, or two tens, which was represented by nn. In this way the numeratitm proceeded up to a hundred, for which another symbol was emplied. Names for II, III, lilt, nfl, etc., appear in theE gyptian hieroglyphics, but a special symbol for each name is not used. Probably the Hindoos first invented such symbols, and passed them on to the A rabs, through whom they were introduced into Eun. 2GREBE nOTATIOH The Greeks xised an awkward notation for recording the results of cotmtii.
(Typographical errors above are due to OCR software and don't occur in the book.)
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